return {
  messages = {
    {
      content = "default system prompt",
      role = "system",
    },
    {
      content = "What's the weather like in London and Paris?",
      role = "user",
    },
    {
      role = "assistant",
      tool_calls = {
        {
          ["function"] = {
            arguments = "",
            name = "weather_with_default",
          },
          id = "call_2025-03-31T18:36:18.58469Z_1",
        },
        {
          ["function"] = {
            arguments = {
              location = "Paris, FR",
              units = "fahrenheit",
            },
            name = "weather_with_default",
          },
          id = "call_2025-03-31T18:36:19.500816Z_1",
        },
      },
    },
    {
      content = "Ran the weather tool The weather in London, UK is 15° celsius",
      role = "tool",
    },
    {
      content = "Ran the weather tool The weather in Paris, FR is 15° fahrenheit",
      role = "tool",
    },
  },
}
